It also powers the system if you choose to operate without a battery

Batteries are covered at no cost if it holds less than 80% capacity

Or to put it in more sustainable terms: It protects and prolongs the lifetime of your phone

9-inch Liquid Retina display

data and audio — with a single adapter

Smart Folio for iPad mini (A17 Pro) - Light Violet iPad Accessories It also powers the systemThe Smart Folio for iPad mini is thin and light, and offers front and back protection for your device. It automatically wakes your iPad when opened and puts it to sleep when closed. The Smart Folio attaches magnetically, and you can easily fold it into different positions to create a stand for reading, viewing, typing, or making FaceTime calls.